package week2interface;

public class Gov {

	EnvStandard provider;
	
	public void setProvider(EnvStandard env) {
		provider = env;
	}
	public static void main(String[] args) {
		Gov g1 = new Gov();
		g1.setProvider(new Person());
		g1.setProvider(new Company());
		g1.setProvider(new College());
	}

}
